Tapcensus

Gross Alpha, Excl. Radon and U violations in Pennsylvania

175 active public water systems in Pennsylvania had a Gross Alpha, Excl. Radon and U violation in the past three years, 5 of them in the latest quarter of EPA's data. What Gross Alpha, Excl. Radon and U is and why it matters.

Health effects: Alpha-emitting radionuclides accumulate in bone and soft tissue, delivering sustained internal radiation doses that increase lifetime cancer risk. There is no established safe threshold for ionizing radiation. Individual contributors such as radium-226 and polonium-210 have their own MCLs; gross alpha serves as a cost-effective screening tool that triggers more specific radionuclide analysis when exceeded.

Systems with a Gross Alpha, Excl. Radon and U violation

Latest quarter first, then largest first
SystemServesStatusRules violated, 3 yrUnresolved
Borough of Howard
Centre County
1,001 4 0
Rural Valley Water Works
Armstrong County
1,000 2 0
Torrance State Hospital
Westmoreland County
997 3 0
Millville Municipal Authority
Columbia County
969 12 1
Peddlers Village
Bucks County
960 4 1
Umh Arbor Estates
Bucks County
920 3 1
Millheim Borough Water Company
Centre County
902 13 1
Aiken Water Company
McKean County
850 5 1
Wyalusing Municipal Authority
Bradford County
700 6 0
Gregg Township Water Authority
Centre County
670 10 1
Petersburg Bor Water Auth
Huntingdon County
650 4 0
Port Matilda Waterworks
Centre County
615 3 0
Crawford Township Authority
Clinton County
600 4 0
Lcwsa Village Water
Lycoming County
598 4 0
Knoxville Water Department
Tioga County
590 4 0
Clarks Summit State Hospital
Lackawanna County
576 7 1
Palm City Park
Lebanon County
490 9 1
MT Gretna Auth
Lebanon County
485 3 0
McVeytown Boro Auth
Mifflin County
478 2 1
Nottingham Manor M H Court
Chester County
473 3 0
Lake Arthur Estates
Butler County
460 6 1
Three Springs Boro Water CO
Huntingdon County
442 3 0
Big Spring Terrace MHP
Cumberland County
439 4 0
Kennerdell North Water System
Venango County
412 4 0
Hamlin Water Company
Wayne County
400 6 0
Jones Twp Municipal Authority
Elk County
396 6 0
Millfair Heights Water System
Erie County
390 4 0
Birchwood Trailer Park
Monroe County
389 5 1
Hickory Hill Country Village
Erie County
375 9 0
Cooperstown Water Company
Venango County
360 8 0
Woodhaven Mobile Home Park
Erie County
350 12 4
Coaldale Six Mile Run Water
Bedford County
320 9 1
Woodland Hills
Wayne County
320 6 0
Paradise Point
Wayne County
300 5 0
Perry Twp Municipal Auth
Snyder County
285 2 0
Country Pines MHP
Luzerne County
280 8 3
Pleasant Valley MHP
Warren County
270 4 0
Pine Grove Estates
Wayne County
263 7 0
Cogan Valley Mobile Home Park
Lycoming County
250 10 1
Collomsville Mutual Waterworks
Lycoming County
250 5 1
Spring Valley
Fayette County
250 5 0
Loysville Youth Dev Ctr
Perry County
249 6 0
Skyview Gardens Apts
Perry County
234 2 1
Crestview Village MHP
Dauphin County
223 9 0
Defiance Water Assn
Bedford County
205 9 1
Creekview MHP
Chester County
200 8 0
Brinton Manor
Delaware County
196 8 0
Arbour Court
Chester County
180 3 0
Martins Community LP MHP
Chester County
180 4 0
Paupack Point Water Assoc
Wayne County
180 5 1
About this data

A system is counted once if any of its violations in the past three years involved Gross Alpha, Excl. Radon and U, including monitoring and reporting lapses. Rules violated and status in the table are for the whole system, not Gross Alpha, Excl. Radon and U alone.

Source: the U.S. EPA's Enforcement and Compliance History Online system (ECHO), which publishes the federal Safe Drinking Water Information System. EPA's terms and values are shown as published. The Pennsylvania records are from EPA's data refresh of Oct 7, 2026; EPA refreshes this data quarterly, and states report to EPA with a lag of three to six months, so the newest violations may not appear yet.